Segment Information - Revenues (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 7,779	$ 6,564	$ 15,107	$ 13,976
Operating Segments | TV Media
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	5,256	5,219	10,901	11,212
Operating Segments | Direct-to-Consumer
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,193	767	2,282	1,365
Operating Segments | Filmed Entertainment
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,363	603	1,987	1,463
Eliminations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	(33)	(25)	(63)	(64)
Eliminations | TV Media
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	(13)	(5)	(24)	(19)
Eliminations | Direct-to-Consumer
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0	(1)	0	(1)
Eliminations | Filmed Entertainment
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	(20)	(19)	(39)	(44)
Advertising
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	2,545	2,599	5,409	5,708
Advertising | Operating Segments | TV Media
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	2,174	2,303	4,695	5,191
Advertising | Operating Segments | Direct-to-Consumer
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	363	291	710	509
Advertising | Operating Segments | Filmed Entertainment
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	12	6	14	12
Affiliate and subscription
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	2,888	2,588	5,728	5,051
Affiliate and subscription | Operating Segments | TV Media
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	2,058	2,112	4,156	4,195
Affiliate and subscription | Operating Segments | Direct-to-Consumer
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	830	476	1,572	856
Licensing and other
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,582	1,243	3,075	3,082
Licensing and other | Operating Segments | TV Media
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,024	804	2,050	1,826
Licensing and other | Operating Segments | Filmed Entertainment
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	587	463	1,078	1,316
Theatrical
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	764	134	895	135
Theatrical | Operating Segments | Filmed Entertainment
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 764	$ 134	$ 895	$ 135